Spring-energized seal

polymerelastomericU-shaped

Product overview
Omniseal® spring-energized seals consist of two precision components: a polymer jacket and a corrosion-resistant metal energizer spring. Compared with conventional elastomeric seals and rigid metal gaskets, these seals offer long-term sealing performance across demanding environments. Engineered spring geometries include ribbon/helical, cantilever (V-spring), U-shaped and advanced pitch/coil designs.

Applications

• Space
• Aviation
• Life science / medical devices
• Energy: carbon-free (e.g. hydrogen, carbon capture)
• Energy: oil & gas (upstream / midstream / downstream)
• Industrial (pumps, valves, general industry)
• Semiconductor
• Nuclear & science research
• Other industries (habitat, consumer, etc.)

Materials
Jackets are produced from high-performance polymer resins formulated for specific sealing demands. Omniseal® uses proprietary compounds, PFAS-Free* jacket materials and Meldin® polyimide/thermoplastic options. Over 500 in-house formulations target chemical resistance, thermal and tribological properties, and dry-running capability.

Springs
The energizer spring supplies permanent resilience to the jacket and compensates for wear, misalignment or eccentricity. Spring loading is engineered to minimize friction in dynamic applications or to provide high loading for cryogenic sealing. Springs are made from corrosion-resistant alloys including 300 series stainless steels, 17-7 PH, Elgiloy®, Hastelloy® and Inconel®. Typical geometries: ribbon/helical, cantilever (V-spring), U-shaped and advanced pitch/coil.

Product families / common designs

• 103A — ribbon or helical spring design for static and low-speed applications; strong leakage control at high pressures and low temperatures.
• 400A — cantilever V-spring design for dynamic applications; balanced friction and leakage control for moderate pressures and temperatures; used in ball valves and aggressive chemical/sour environments.
• APS — advanced pitch/coil spring design to minimize friction in dynamic applications; small cross-sections for miniaturized uses (life science, medical devices).
• RACO® — U-shaped spring design for extreme face sealing, cryogenic fluids and high vacuum; heavy-duty design with long-term space heritage.

Available resources
Manufacturer provides a comprehensive spring-energized seals handbook (US and EU English versions) and product videos (origin/history, installation tooling, satellite thruster application) to support selection and installation.

Technical specifications

• Temperature range: -268°C to +316°C (-450°F to +600°F)
• Pressure capability: vacuum up to 50,000 psi (3448 bar)
• Maximum dynamic speed: up to 1 m/s
• Clamping load (spring): 1 to 11 N/mm
• Available diameters: 5 mm to 3000 mm
• Surface finish recommendations: Ra < 16 µin; Ra < 8 µin where critical
• Jacket materials: proprietary high-performance polymers, PFAS-Free* compounds, Meldin® polyimides and engineered thermoplastics (PPS, PEEK, PAI)
• Spring materials: 300 series stainless steels, 17-7 PH, Elgiloy®, Hastelloy®, Inconel®
• Typical geometries: ribbon/helical, cantilever (V-spring), U-shaped, advanced pitch/coil
• Supported applications: static & dynamic sealing, cryogenic, high temperature, high pressure, low friction / dry running, chemical and sour environments